Finding the Fourth Proportional to 9,127.57, 12,598.74 and 5,351.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,127.57 : 12,598.74 = 5,351.55 : x
2. Step 2: Convert to fraction form
   9,127.57/12,598.74 = 5,351.55/x
3. Step 3: Cross multiply
   9,127.57x = 12,598.74 × 5,351.55
4. Step 4: Simplify right side
   9,127.57x = 67,422,787.05
5. Step 5: Solve for x
   x = 67,422,787.05/9,127.57
6. Step 6: Final answer
   x = 7,386.72